Remediation of cadmium toxicity in field peas ( Pisum sativum L.) through exogenous silicon

Rahman, M. Habibur; Ghosal, Anubrata; Alam, Mohammad Firoz; Kabir, Ahmad Humayan

doi:10.1016/j.ecoenv.2016.09.019

Cited by 99 publications

(64 citation statements)

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“…Further, it impairs mineral nutrition in plants [ 13 , 14 ]. Several studies have shown that Cd toxicity alters nitrogen metabolism, reduces photosynthetic efficiency caused by impaired chlorophyll synthesis, and reduces carbon fixation [ 8 , 9 ]. Increased Cd accumulation hampers root morphology, resulting in stunted growth [ 15 ], and thus causes oxidative stress in vegetables via the generation of reactive oxygen species (ROS), which damage the antioxidant enzyme system [ 1 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…Increased Cd accumulation hampers root morphology, resulting in stunted growth [ 15 ], and thus causes oxidative stress in vegetables via the generation of reactive oxygen species (ROS), which damage the antioxidant enzyme system [ 1 , 16 ]. To tolerate Cd stress, plants have developed advanced tolerance strategies, including osmoprotectant synthesis and antioxidant defense and glyoxalase systems [ 1 , 8 , 16 – 20 ]. Enzymatic and non-enzymatic antioxidants related to the ascorbate–glutathione cycle have a crucial role in stress tolerance mechanisms in plants [ 2 , 17 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

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Interactive effect of 24-epibrassinolide and silicon alleviates cadmium stress via the modulation of antioxidant defense and glyoxalase systems and macronutrient content in Pisum sativum L. seedlings

et al. 2018

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BackgroundThis study assessed the effects of 24-epibrassinolide (EBL, 10–7M) and silicon (2 mM) on the alleviation of cadmium (Cd, 150 mg L–1) toxicity in Pisum sativum L. seedlings via the modulation of growth, antioxidant defense, glyoxalase system, and nutrient uptake.ResultsShoot and root lengths declined by 46.43% and 52.78%, respectively, following Cd stress. Shoot and root dry weights also declined with Cd toxicity. Biochemical and physiological aspects exhibit significant decline including total chlorophyll (33.09%), carotenoid (51.51%), photosynthetic efficiency (32.60%), photochemical quenching (19.04%), leaf relative water content (40.18%), and gas exchange parameters (80.65%). However, EBL or Si supplementation alone or in combination modulates the previously mentioned parameters. Cadmium stress increased proline and glycine betaine (GB) contents by 4.37 and 2.41-fold, respectively. Exposure of plants to Cd stress increased the accumulation of H2O2, malondialdehyde content, electrolyte leakage, and methylglyoxal, which declined significantly with EBL and Si supplementation, both individually and in combination. Similarly, Cd stress adversely affected enzymatic and non-enzymatic antioxidants, but EBL and/or Si supplementation maintained antioxidant levels. Glyoxalase I (GlyI) accumulated after Cd stress and increased further with the application of EBL and Si. However, GlyII content declined after Cd stress but increased with supplementation of EBL and Si. Cadmium accumulation occurred in the following order: roots > shoots>leaves. Supplementation with EBL and Si, individually and in combination reduced Cd accumulation and enhanced the uptake of macronutrients and micronutrients in shoots and roots, which declined with Cd toxicity.ConclusionThe application of 24-EBL and Si, individually and in combination, alleviated the adverse effects of Cd by improving growth, biochemical parameters, nutrient uptake, osmolyte accumulation, and the anti-oxidative defense and glyoxalase systems in Pisum sativum seedlings.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interactive effect of 24-epibrassinolide and silicon alleviates cadmium stress via the modulation of antioxidant defense and glyoxalase systems and macronutrient content in Pisum sativum L. seedlings

et al. 2018

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“…Cadmium exposure interrupts nutrient uptake, inhibits enzyme activities, generates reactive oxygen species (ROS) and damages cell components (Wu J. et al, 2016; Rahman et al, 2017). Cadmium possesses various degrees of phytotoxicity and exhibits potential health problems when accumulated in edible parts of crops (Wu Z. et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Silicon (Si) is considered to be one of the most common elements of the earth crust by mass which has positive roles in diminishing detrimental effects caused by various heavy metals (Greger et al, 2016; Wu J. et al, 2016; Wu Z. et al, 2016; Rahman et al, 2017; Wu et al, 2017). In a recent study, Kabir et al (2016) reported the Si-mediated mitigation of Cd toxicity in Medicago sativa L. by limiting Fe uptake which involves the mechanism of Fe acquisition downregulation.…”

Section: Introductionmentioning

confidence: 99%

Exogenous Silicon Attenuates Cadmium-Induced Oxidative Stress in Brassica napus L. by Modulating AsA-GSH Pathway and Glyoxalase System

et al. 2017

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Cadmium (Cd) brings a devastating health hazard to human being as a serious consequence of agricultural and environmental contamination. We demonstrated the protective effect of silicon (Si) on cadmium (Cd)-stressed rapeseed (Brassica napus L. cv. BINA Sharisha 3) plants through regulation of antioxidant defense and glyoxalase systems. Twelve-day-old seedlings were exposed to Cd stress (0.5 and 1.0 mM CdCl2) separately and in combination with Si (SiO2, 1.0 mM) for 2 days. Cadmium toxicity was evident by an obvious oxidative stress through sharp increases in H2O2 content and lipid peroxidation (malondialdehyde, MDA content), and visible sign of superoxide and H2O2. Cadmium stress also decreased the content of ascorbate (AsA) and glutathione (GSH) as well as their redox pool. The activities of monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and catalase (CAT) were decreased by Cd while ascorbate peroxidase (APX) and glutathione S-transferase (GST) activities were increased. The enzymes of glyoxalase system (glyoxalase I, Gly I and glyoxalase II, Gly II) were also inefficient under Cd stress. However, exogenous application of Si in Cd treated seedlings reduced H2O2 and MDA contents and improved antioxidant defense mechanism through increasing the AsA and GSH pools and activities of AsA-GSH cycle (APX, MDHAR, DHAR and GR) and glyoxalase system (Gly I and Gly II) enzymes and CAT. Thus Si reduced oxidative damage in plants to make more tolerant under Cd stress through augmentation of different antioxidant components and methylglyoxal detoxification system.

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“…In previous studies, two switchgrass cultivars (‘Alamo’ and ‘Blackwell’) were evaluated for tolerance in Cd-contaminated soils, and ‘Alamo’ showed better performance [ 15 ]. During the past years, many approaches have been conducted to mitigate Cd toxicity and stimulate plant growth by applying exogenous materials such as silicon and malic acids as a method to develop plants in Cd-contaminated sites [ 16 , 17 ]. An important concern is to understand mechanisms of alleviation of Cd toxicity in plants by application of exogenous agents.…”

Section: Introductionmentioning

confidence: 99%

Exogenous GR24 Alleviates Cadmium Toxicity by Reducing Cadmium Uptake in Switchgrass (Panicum virgatum) Seedlings

Tai

Yin

Fang

et al. 2017

IJERPH

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Strigolactones (SLs) are classified into plant hormones, playing a key role as a mediator of plant growth in response to several abiotic stresses, including drought and salinity. However, the role of SLs in cadmium (Cd)-induced stress to plants is still unknown. The physiological responses of switchgrass (Panicum virgatum) stressed in 10 μmol L−1 Cd to exogenous synthetic SLs analog, GR24 were studied in hydroponics. The Cd stress significantly caused the adverse effects on plant growth and root morphology, inhibited photosynthesis, but boosted lipid peroxidation of Switchgrass seedlings. After treatment of 1 μmol L−1 GR24, the above adverse effects caused by Cd stress were significantly alleviated, mainly reflects in improvement of shoot biomass, relative water content, root development, chlorophyll contents, activities of typical antioxidant enzymes, nutrient uptake. The reason for exogenous GR24 alleviating cadmium toxicity might be owing to that exogenous GR24 promoted the content of endogenous SLs, increased some essential element Fe (iron), Zn (zinc), Mn (manganese) and Cu (copper) uptake and reduced cadmium uptake, accumulation and partition in shoot of switchgrass seedlings.

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Remediation of cadmium toxicity in field peas ( Pisum sativum L.) through exogenous silicon

Cited by 99 publications

References 61 publications

Interactive effect of 24-epibrassinolide and silicon alleviates cadmium stress via the modulation of antioxidant defense and glyoxalase systems and macronutrient content in Pisum sativum L. seedlings

Interactive effect of 24-epibrassinolide and silicon alleviates cadmium stress via the modulation of antioxidant defense and glyoxalase systems and macronutrient content in Pisum sativum L. seedlings

Exogenous Silicon Attenuates Cadmium-Induced Oxidative Stress in Brassica napus L. by Modulating AsA-GSH Pathway and Glyoxalase System

Exogenous GR24 Alleviates Cadmium Toxicity by Reducing Cadmium Uptake in Switchgrass (Panicum virgatum) Seedlings

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